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<h3>SED: Simple Equilibrium Diagrams</h3>

<h3>Format of the Input Data-File</h3>

<p><a href="SP_Data_File_Format.htm">Format of Input Data-Files</a>: Input
files consist of: <nobr><b>1)</b></nobr> definition of the
<a href="SP_Data_File_Chemical_System.htm">chemical <nobr>system</a>;</nobr>
<nobr><b>2)</b></nobr> <b>plot information;</b> and
<nobr><b>3)</b></nobr> <a href="SP_Data_File_Concs.htm">concentrations</a>
(ranges) for the chemical components.</p>

<p>The <b>plot information</b> for <b>SED</b> is as follows:</p>
<p class="indent">
[EH,]  YCOMP,  [Ymin, Ymax,]  XCOMP,
</p>
<p class="cont">
where data within [] are optional.</p>
<p>
YCOMP and XCOMP describe the variables in the X- and Y-axes as 
follows:</p>
<p class="indent">XCOMP = name for the component in the X-axis.</p>
<p class="indent">YCOMP = a text describing the Y-axis:
<ul class="indent2">
<li>For a <a href="SP_Diagr_Fract.htm">fraction</a> diagram YCOMP = the name
				  			of the component in the Y-axis.</li>
<li>For a <a href="SP_Diagr_Log.htm">logarithmic</a> diagram YCOMP = L
				  			(or LC, Ymin, Ymax).</li>
<li>For a <nobr>log(<a href="SP_Diagr_Solubl.htm">solubility</a>)</nobr> diagram
				  			YCOMP = S (or LS, Ymin, Ymax).</li>
<li>For a relative diagram YCOMP = R, REFCOMP, Ymin,Ymax
				  			(where <nobr>&#147;REFCOMP&#148;</nobr> is the name of the
				  			reference chemical component).</li>
<li>For calculated <a href="1_Eh_pe.htm">pe</a> in the Y-axis YCOMP = pe, Ymin, Ymax.</li>
<li>For calculated <a href="SP_pH.htm">pH</a> in the Y-axis YCOMP = pH,
				  			Ymin, Ymax.</li>
</ul></p>
<p class="indent">
(<i>Ymin</i> and <i>Ymax</i> = minimum and maximum values for the Y-axis)
</p>

<p>If before YCOMP, the text <nobr>&#147;EH,&#148;</nobr> is found, the redox
potential (instead of <a href="1_Eh_pe.htm">pe</a>) is used as the variable in
the diagram.</p>

<p>A list of possible diagram types may be obtained from SED by entering a
<nobr>&#147;?&#148;</nobr> in the plot-definition input line, and running the
program: this will make SED complain that <nobr>&#147;?&#148;</nobr> is not
an acceptable diagram type, and the program will print a list of choices for the
plot definition.</p>

<p>Several input file <a href="Tut_Example_Files.htm">examples</a> may be
found in subdirectory <nobr>&#147;.\EXAMPLES&#148;.</nobr></p>

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